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US 4,162,577 AGranted
Pendulum drawing machine
OwnerMichael A. Cosmaninventor
Life of this patent
Estimating the term…
Abstract
A pendulum-actuated drawing instrument having at least two pendulums mechanically coupled with a scribing device by means of interconnected arms extending parallel to and above a support. The arms are universally pivottably connected and attached to the pendulums by means of nonextensible resilient rods.
Claims16
A pendulum drawing machine for making various designs on a sheet positioned on a planar horizontal surface of a base, the machine comprising:
- a. Two pendulum arms having weighted ends;
- b. A mounting means for pivotally mounting the pendulum arms to the base, the arms being mounted in a vertical position relative to the planar surface of the base and positioned such that the weighted ends extend below the planar surface of the base and the unweighted ends extend above the planar surface;
- c. A pivot means for pivotally supporting the pendulum arms on the mounting means;
- d. Two horizontal arms;
- e. Arms attaching means for pivotally and rotationally attaching the horizontal arms to the ends of the pendulum arms extending above the planar surface of the base, the arms attaching means comprising a single, straight, nonextensible, noncompressible, resilient rod which (a) allows only limited rotation of the horizontal arms (1) about the axis of the horizontal arms, (2) about the axis of the pendulum arms, and (3) about an axis parallel to the pivot axis of the pendulum arms and which (b) prevents translational movement of the horizontal arms relative to the pendulum arms;
- f. a penholder attached to the ends of the horizontal arms opposite the ends attached to the arms attaching means, the penholder holding a pen for drawing designs on a sheet.
3 more elements
A pendulum drawing machine for making various designs on a sheet positioned on a planar horizontal surface of a base, the machine comprising:
- a. Two pendulum arms having weighted ends;
- b. A mounting means for pivotally mounting the pendulum arms to the base, the arms being mounted in a vertical position relative to the planar surface of the base and positioned such that the weighted ends extend below the planar surface of the base and the unweighted ends extend above the planar surface;
- c. A pivot means for pivotally supporting the pendulum arms on the mounting means;
- d. Two horizontal arms;
- e. Arms attaching means for pivotally and rotationally attaching the horizontal arms to the ends of the pendulum arms extending above the planar surface of the base;
- f. A penholder attached to the ends of the horizontal arms opposite the ends attached to the arms attaching means, the penholder holding a pen for drawing designs on a sheet.
- g. A penholder attachment means for attaching a first horizontal arm to the penholder at a right angle to the second horizontal arm by a flexible, rectangular sheet material which allows the first horizontal arm during operation to meet the penholder at continually varying angles but prevents translational movement of the penholder relative to the first horizontal arm.
4 more elements
Dependencies are inferred from the claim text.